UNITED NATIONS, N.Y. - Foreign Minister Swaran Singh of India conferred here today with Secretary General Thant and urged that international pressure be exerted on President Agha Mohammad Yahya Khan's Government to cease what was termed political repression in East Pakistan. The Indian minister, who has visited Moscow, Bonn, Paris and Ottawa, is going to Washington to schedule talks tomorrow with President Nixon and Secretary of State William P. Rogers.

After leaving Mr. Thant's office, he told correspondents he had asked the Secretary General to use his "tremendous influence" to impress upon the Pakistani Government the need for a political solution to enable millions of refugees now in India to return home .